nl80211: add OCE scan and capability flags

Add Optimized Connectivity Experience (OCE) scan and capability flags.
Some of them unique to OCE and some are stand alone.
And add scan flags to enable/disable them.

Signed-off-by: Roee Zamir <roee.zamir@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Change-Id: Ie8b25e35c5eb9584eb07a57f42d990092c40b503
Git-commit: 2d23d073
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git


CRs-fixed: 2173869
Signed-off-by: Peng Xu <pxu@codeaurora.org>